How to include and use jQuery in Angular properly?

I am building an ionic application for android. I have added jquery into my index.html:

<script src="lib/jquery/jquery-1.11.3.min.js"></script>
<script src="lib/ionic/js/ionic.bundle.js"></script>

Then in my controller function I did this:

.controller('bluetoothCtrl', function($scope, $cordovaBluetoothSerial, $timeout, $ionicModal) {
     var $jq = jQuery.noConflict();
     $scope.doSomething = function(){
         $jq.grep(...);
      };
      ....
});

However when I load the application on my android, I get the below error:

Failed to load resource: net::ERR_FILE_NOT_FOUND